"use strict";
//项目开发用！！！
//这个文件其实就是webpack.config.js
const path = require("path");
const defaultSettings = require("./src/settings.js");
const UglifyJSPlugin = require("uglifyjs-webpack-plugin");
var webpack = require("webpack");

function resolve(dir) {
  return path.join(__dirname, dir);
}

const name = defaultSettings.title || "Loading..."; // page title
//以下为MonacoEditor需要
const MonacoWebpackPlugin = require("monaco-editor-webpack-plugin");
//----

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following method:
// port = 9527 npm run dev OR npm run dev --port = 9527
const port = process.env.port || process.env.npm_config_port || 2009; // dev port
const NODE_ENV = process.env.NODE_ENV;
// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  // optimization:{
  //   minimize:true
  // },
  // entry: {//by itdos.com
  //   'microi.net': NODE_ENV == 'development' ? './src/main.js' : './index.js',
  // },
  // filename: 'microi.net.js',
  css: {
    extract: false
  },
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: "./",
  outputDir: "dist/itdos.os/dist",
  assetsDir: "static",
  lintOnSave: process.env.NODE_ENV === "development",
  productionSourceMap: false,

  devServer: {
    watchOptions: {
      ignored: ["node_modules"] //解决mac cpu占用高？
    },
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true
    }
    // before: require('./mock/mock-server.js')
  },
  configureWebpack: {
    devtool: "source-map", // 开发环境使用 source-map
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        "@": resolve("src")
      }
    },
    //以下为MonacoEditor需要
    plugins: [
      new MonacoWebpackPlugin({
        languages: ["javascript"] //, 'css', 'html' , 'typescript', 'json' available options are documented at https://github.com/Microsoft/monaco-editor-webpack-plugin#options
      })
    ]
    //-----end
  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    // it can improve the speed of the first screen, it is recommended to turn on preload
    //--这里是因为npm run lib报错才注释
    config.plugin("preload").tap(() => [
      {
        rel: "preload",
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: "initial"
      }
    ]);
    //--这里是因为npm run lib报错才注释

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete("prefetch");

    // set svg-sprite-loader
    config.module.rule("svg").exclude.add(resolve("src/icons")).end();
    config.module
      .rule("icons")
      .test(/\.svg$/)
      .include.add(resolve("src/icons"))
      .end()
      .use("svg-sprite-loader")
      .loader("svg-sprite-loader")
      .options({
        symbolId: "icon-[name]"
      })
      .end();

    config.when(process.env.NODE_ENV !== "development", (config) => {
      config
        .plugin("ScriptExtHtmlWebpackPlugin")
        .after("html")
        .use("script-ext-html-webpack-plugin", [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/
          }
        ])
        .end();
      config.optimization.splitChunks({
        chunks: "all",
        cacheGroups: {
          libs: {
            name: "chunk-libs",
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: "initial" // only package third parties that are initially dependent
          },
          elementUI: {
            name: "chunk-elementUI", // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
          },
          commons: {
            name: "chunk-commons",
            test: resolve("src/components"), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true
          }
        }
      });
      // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
      config.optimization.runtimeChunk("single");
      // config.optimization.minimize(true);
    });
  }
};
